Got an error while installing opencv-python

Question

I am using python 2.7.18

I want to install opencv-python using command prompt but it is showing me the error as follows:

I am using command as follows:

C:\Python27>python -m pip install opencv-python

It is showing me error as follows:

DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Collecting opencv-python
  Using cached opencv-python-4.3.0.38.tar.gz (88.0 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  ERROR: Command errored out with exit status 1:
   command: 'C:\Python27\python.exe' 'C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'c:\users\nisha\appdata\local\temp\tmpyicvra'
       cwd: c:\users\nisha\appdata\local\temp\pip-install-6hcuqj\opencv-python
  Complete output (22 lines):
  Traceback (most recent call last):
    File "C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 280, in <module>
      main()
    File "C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 263, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 114, in get_requires_for_build_wheel
      return hook(config_settings)
    File "c:\users\nisha\appdata\local\temp\pip-build-env-cqi62z\overlay\Lib\site-packages\setuptools\build_meta.py", line 146, in get_requires_for_build_wheel
      return self._get_build_requires(config_settings, requirements=['wheel'])
    File "c:\users\nisha\appdata\local\temp\pip-build-env-cqi62z\overlay\Lib\site-packages\setuptools\build_meta.py", line 127, in _get_build_requires
      self.run_setup()
    File "c:\users\nisha\appdata\local\temp\pip-build-env-cqi62z\overlay\Lib\site-packages\setuptools\build_meta.py", line 243, in run_setup
      self).run_setup(setup_script=setup_script)
    File "c:\users\nisha\appdata\local\temp\pip-build-env-cqi62z\overlay\Lib\site-packages\setuptools\build_meta.py", line 142, in run_setup
      exec(compile(code, __file__, 'exec'), locals())
    File "setup.py", line 448, in <module>
      main()
    File "setup.py", line 99, in main
      % {"ext": re.escape(sysconfig.get_config_var("EXT_SUFFIX"))}
    File "C:\Python27\lib\re.py", line 210, in escape
      s = list(pattern)
  TypeError: 'NoneType' object is not iterable
  ----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Python27\python.exe' 'C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'c:\users\nisha\appdata\local\temp\tmpyicvra' Check the logs for full command output.

Can anyone please help me to solve this error.

Thanking You...

Answer 1

Hello @Nishant,

The error you got itself suggest to upgrade your Python vesion.

Use this commad:

python -m pip install --upgrade pip 

Try this

Comments

I'm having upgraded version of pip 20.2.3

Still I have executed command which you have suggested and it showing me output as follows:

Command:

C:\Python27>python -m pip install --upgrade pip

Output:

DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Requirement already up-to-date: pip in c:\python27\lib\site-packages (20.2.3)

After this again I tried to install opencv using same command as follows:

C:\Python27>python -m pip install opencv-python

But again I have encountered an error as follows:

DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Collecting opencv-python
  Using cached opencv-python-4.3.0.38.tar.gz (88.0 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  ERROR: Command errored out with exit status 1:
   command: 'C:\Python27\python.exe' 'C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'c:\users\nisha\appdata\local\temp\tmp_oeqic'
       cwd: c:\users\nisha\appdata\local\temp\pip-install-qwjkcd\opencv-python
  Complete output (22 lines):
  Traceback (most recent call last):
    File "C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 280, in <module>
      main()
    File "C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 263, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 114, in get_requires_for_build_wheel
      return hook(config_settings)
    File "c:\users\nisha\appdata\local\temp\pip-build-env-vqpyq4\overlay\Lib\site-packages\setuptools\build_meta.py", line 146, in get_requires_for_build_wheel
      return self._get_build_requires(config_settings, requirements=['wheel'])
    File "c:\users\nisha\appdata\local\temp\pip-build-env-vqpyq4\overlay\Lib\site-packages\setuptools\build_meta.py", line 127, in _get_build_requires
      self.run_setup()
    File "c:\users\nisha\appdata\local\temp\pip-build-env-vqpyq4\overlay\Lib\site-packages\setuptools\build_meta.py", line 243, in run_setup
      self).run_setup(setup_script=setup_script)
    File "c:\users\nisha\appdata\local\temp\pip-build-env-vqpyq4\overlay\Lib\site-packages\setuptools\build_meta.py", line 142, in run_setup
      exec(compile(code, __file__, 'exec'), locals())
    File "setup.py", line 448, in <module>
      main()
    File "setup.py", line 99, in main
      % {"ext": re.escape(sysconfig.get_config_var("EXT_SUFFIX"))}
    File "C:\Python27\lib\re.py", line 210, in escape
      s = list(pattern)
  TypeError: 'NoneType' object is not iterable
  ----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Python27\python.exe' 'C:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'c:\users\nisha\appdata\local\temp\tmp_oeqic' Check the logs for full command output.

---

Hello @ Nishant,

Use python version 3.6 open CV is compatible with that.

Answer 2

Opencv is compatible with python version 3.8

Answer 3

Supported Python versions

Python 3.x compatible pre-built wheels are provided for the officially supported Python versions (not in EOL):

1. 3.6
2. 3.7
3. 3.8
4. 3.9

Answer 4

instead of writing pip install  'opencv-python ' you should write this command pip install 'opencv-contrib-python'